The TEM57-MK2 Transmitter is the upgraded version of the TEM57, and combined with the PROTEM receiver are the principal components of the PROTEM 57-MK2 system. The design and performance of the TEM57-MK2, with increased power of 1,500 W from an internal power supply, makes it a highly portable, powerful mid-range time domain transmitter. The internal power supply has variable voltage range from 18 to 60 V so that it can be precisely matched to the transmitter loop for optimum performance. An external battery supply increases performance to 3,800 W and 160 V.

The TEM57-MK2 is the perfect mid-range power transmitter for sounding depth, thickness and conductivity of geologic layers down to 500 metres for a wide variety of applications such as mapping of aquifers and aquitards, water quality and stratigraphy. In coastal area, the PROTEM 57-MK2 system has defined depth to saline intrusion as accurately as chemical well samples.

The PROTEM 57-MK2, with a short reference cable, portable transmitter and 3-D receiver coil, can delineate complex ore bodies within 200 m of surface. Deeper conductors can be characterized by profiling with a crystal-synchronized receiver and a large, fixed transmitter loop. Modelling provides conductivity, thickness, dip and extent of the ore body.